//function to set callback
public static void gluTessCallback([In] Glu.GLUtesselator tess, int which, [In] TessVertexCallback_2 func)
{
unsafe
{
newTessVertexCallback = func;
internalVertCB = new IntTessVertCB(InternalTessVertexCallback);
__gluTessCallback(tess, which, internalVertCB);
}
}
private static extern unsafe void __gluTessCallback(Glu.GLUtesselator tess, int which, IntTessVertCB cb);
